/*
 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
 */

#ifndef CrossOriginAccessControl_h
#define CrossOriginAccessControl_h

#include "ResourceHandle.h"
#include "ResourceRequest.h"
#include <wtf/Forward.h>
#include <wtf/HashSet.h>

namespace WebCore {

typedef HashSet<String, CaseFoldingHash> HTTPHeaderSet;

class HTTPHeaderMap;
class ResourceResponse;
class SecurityOrigin;

bool isSimpleCrossOriginAccessRequest(const String& method, const HTTPHeaderMap&);
bool isOnAccessControlSimpleRequestMethodWhitelist(const String&);
bool isOnAccessControlSimpleRequestHeaderWhitelist(const String& name, const String& value);
bool isOnAccessControlResponseHeaderWhitelist(const String&);

void updateRequestForAccessControl(ResourceRequest&, SecurityOrigin*, StoredCredentials);
ResourceRequest createAccessControlPreflightRequest(const ResourceRequest&, SecurityOrigin*);

bool passesAccessControlCheck(const ResourceResponse&, StoredCredentials, SecurityOrigin*, String& errorDescription);
void parseAccessControlExposeHeadersAllowList(const String& headerValue, HTTPHeaderSet&);

} // namespace WebCore

#endif // CrossOriginAccessControl_h
